Context
The client initiated a major migration of its IT workstation environment to replace an outdated Windows ecosystem and secure its digital usage. This transition had significant impacts across the entire user ecosystem, including email, network, business applications, browsers, secure printing, and virtualized environments. To support this critical migration, the client relies on Avaliance to lead technical operations, ensure application compatibility, and guarantee service continuity.
Challenges
The client needed to successfully migrate to a modern Windows environment while minimizing operational risks.
Key challenges included ensuring compatibility of business applications and browsers, maintaining service continuity, securing access and printing systems, and improving virtualized environments and testing platforms required for application evolution.

Achievements
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full migration of the Windows environment to a more recent and secure version
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adaptation of associated infrastructures (email, network, browsers, proxy)
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analysis and validation of business application compatibility
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implementation of configuration policies (GPO) and browser optimization
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creation of virtualized environments for testing and secure access configuration
Technologies & Frameworks
Results
Context
The client, a large international insurance group, initiated an initiative to harmonize and modernize the Cloud architectures across its various entities. This approach relies on both private and public Cloud environments and aims to strengthen the consistency, security, and performance of solutions deployed at the group level. To support this structural transformation, the client relies on Avaliance to define common Cloud architectures and support technical and business teams in their implementation.
Challenges
The client needed to ensure the consistency of Cloud architectures in a multi-entity and multi-environment context, while maintaining a high level of security, performance, and portability of solutions.
The challenges also included defining shared architecture frameworks, optimizing support for technical teams, and enabling the progressive scaling of Cloud infrastructures across the group.

Achievements
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support for technical teams in defining Cloud architectures across private and public environments
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formalization of architecture principles and standards shared across the group
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integration of security, performance, and portability requirements from the design phase
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support for business and technical teams in adopting the defined architecture models
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alignment of technical solutions with scaling objectives and industrialization of Cloud usage
Technologies & Frameworks
Results
Context
The client, a large international insurance group, initiated a modernization program of its IT infrastructure as part of its Cloud migration. This strategic initiative aims to redesign the storage architecture to meet security, performance, and resilience requirements, while supporting the transition to hybrid and Cloud environments. To successfully deliver this transformation, the client relies on Avaliance, in collaboration with NetApp, to design and deploy Cloud storage solutions aligned with business needs and group standards.
Challenges
The client needed a reliable, secure, and resilient Cloud storage infrastructure capable of supporting the gradual migration of data to hybrid or full Cloud environments.
The challenges included ensuring full service continuity, protecting sensitive data, improving data access performance, and implementing a scalable architecture enabling long-term cost optimization.

Achievements
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design of secure, high-performance, and scalable Cloud storage architectures
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integration of NetApp solutions tailored to hybrid and Cloud environments
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support for data migration within a secure and controlled framework
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optimization of data availability, resilience, and performance
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coordination with technical teams to ensure overall architectural consistency